How does the verb vouch contrast with its synonyms?
Some common synonyms of vouch are attest, certify, and witness. While all these words mean "to testify to the truth or genuineness of something," vouch applies to one who testifies as a competent authority or a reliable person.
willing to vouch for her integrity
When can attest be used instead of vouch?
While in some cases nearly identical to vouch, attest applies to oral or written testimony usually from experts or witnesses.
attested to the authenticity of the document
When is it sensible to use certify instead of vouch?
The words certify and vouch are synonyms, but do differ in nuance. Specifically, certify usually applies to a written statement, especially one carrying a signature or seal.
certified that the candidate had met all requirements
When would witness be a good substitute for vouch?
The words witness and vouch can be used in similar contexts, but witness applies to the subscribing of one's own name to a document as evidence of its genuineness.